EPA Method 551.1 Internal Standard

EPA Method 617/8080/8250/8270 - Analytes

2-(4-Chlorophenyl)-1H-benzimidazole, neat, Solvent-neat, Unit 10MG, # of units-15, Cas.no. 1019-85-8

Thiophene in Thiophene-free Benzene Units: 5x1mL in certan bottles, 10mL screw-capped bottle Chiron No. Concentration Light White Mineral Oil µg thiophene/g (20 cSt at 40°C)